Jampang, A. O., E. D. V. Hullebusch, and H. C. Siu. “Chitosan Beads As Eco-Friendly Biosorbent for the Biosorption of Au(III) and Cu(II) from Aqueous Solutions”. Environment-Behaviour Proceedings Journal, vol. 7, no. 21, Sept. 2022, pp. 359-66, doi:10.21834/ebpj.v7i21.3667.